The Truth About Climate Change In a few Words
The Truth About Climate Change In a few Words Why are we so concerned about climate change, what has caused it and what are the risks? The causes of the greenhouse effect created by human activities and the commitments made to reverse the trend. By Roberto R. Diaz Blanco Life on Earth exists thanks to a combination of three factors: the right distance from the Sun, the chemical composition of the atmosphere and the presence of the water cycle. Specifically, the atmosphere ensures that our planet has a climate suitable for life thanks to the so-called natural greenhouse effect. When the sun's rays reach the Earth's surface, they are partly absorbed and partly bounced outwards; if the atmosphere did not exist, they would be dispersed into space, but instead a good part of them are retained and sent back to Earth by some gasses present in the atmosphere, precisely the greenhouse gasses (among them are mainly carbon dioxide and methane, but also others such as water vapor). Thus